Machine for cutting sheet metal



(No Model.) 3 Sheets-Sheet 1-.

E. M. WILBOR. MACHINE FOR CUTTING SHEET METAL.

Nofzss ogl. PatentedS'ept. 18,1883.

(No Model.) 3 Sheets-Sheet 2-.

- E. M. WILBOR. MACHINE FOR CUTTING SHEET METAL.

Patented Sept. 18, 1883.

n 5". emf) wibwss e3:

3 Sheets-Sheet 3.

(No Model.) I

' V 'E. WILBOR.

MACHINE FOR CUTTING SHEET META-L. No. 285,091. Patented Sept. 18, 18x83.

N. PETERS. Plwlolilhographlr. Wilshmglon. n. 1;

' UNITED STATES? PATENT O FICE.

ELI-JAH 'wILBoR, OF TAUNTON, MASSACHUSETTS.

MACHINE FOR CUTTING SHEET METAL.

SPECIFICATION forming part of Letters Patent No. 285,091, datedSeptember 18, 1883i Application filed May 16, 1881.

To all whom it may concern Be it known that I, ELIJAH M. WILBoR, of

Ta-unton, State of Massachusetts, have invented a Machinefor CuttingSheet Metal, of which thefollowing is a specification.

This invention relates to that class of metalcutting machines whichsever the'metal by a shearing action, and it is especially designed andadapted for notching andclipping the Figure 1 is atop or plan view of mymachine complete for use, the pan-section 9 being shown by dotted linesin position in the machine to be notched and clipped as it appears inFig. 6.

v Fig. 2 is a detached plan view of that portion of the machinewhich isshown in Fig. 1 to the right of the actuating-lever Z, but with aportion of the die or cutter-lever Z broken away, in order to show thecutters which are arranged beneath it, a part of the pan-section 9 beingshown by dotted lines in position to be notched by cutters 10 and 11 atthe intersection of its convex and end lines, and to be clipped bycutters 14 and 15 at the intersection of its concave and end lines, saidcutters 10 and 14 being shown in plan, and the cutters 11 and 15 beingshown in horizontal section. Fig. 3 is a side elevation, taken as viewedfrom the right in Fig. 1, but omitting the lever Z. Fig. 4 is a detachedfront elevation taken as viewed from the left in Fig. 2, and showingthat portion of the machine which is shown in said Fig. 2.

Fig. 5 is a vertical transverse section, taken as on line Y Z, Fig. 3.Fig. 6is adiminished plan view of a pan-section as notched and clippedin my said machine. Fig. 7 is a perspective view of my machine a portionof the central or actuating lever, Z, and of the near cutter-lever ibeing broken away, the latter to show the other parts, the cutter-bars iZ, and their cutters being exactly duplicated at the two sides of themachine.

In said figure, a represents a bed-piece, each half of which is at anobtuse angle to a line passing through its transverse center, as shown(No model.)

in Fig. 1. In each of such halves is formed a.

longitudinal vertical slot, 2, for the purpose of adjustably securing inposition the dieplates g by means of the clamping screw-bolts 6, whichpass through slots 2in bed-piece a and slots 3 in plates 9. A centralbed or-bar, b, is secured transversely and centrally to bed a, as shownin Fig. 1, and upon the bar I) is secured by screw bolt f thebinding-bar 0, between which and said bar I) the thin sections of metalare placed to be cut, they being clamped in position by the screw d,which is threaded in bar 0 and arranged to exert the requisite force up011 the sections when placed beneath it upon bed or bar I). r

In each of the beds gis a low standard, h, to which are respectivelvpivoted the dielevers i Z, so as to allow a rising and falling movementof the front ends thereof, said levers being secured to the front bar,In, by bolts m m, which pass through holes in the die-levers and throughslot 4 in said bar In. A hand-lever, Z, is at its front end secured tothe center of bar 70, while at its rear end it is secured to standard 5,which rises from bedb. Thus the dielevers Z Z andhand-leverlarerespectively pivoted at their rear ends,while at their front ends theyare each secured to bar k. Therefore, by vertically actuating the frontend of said handlever Z the motion thereof will be imparted to levers 13through bar 70, the slotted guiding plates 7 7 secured on leversi andengaging the guiding-studs n a, respectively secured in the curvedsupports 8, serving to insure a direct vertical movement of levers i, inorder that the diesthereon shall coincide with their coacting chine isto out said notches p and to clip the corners at 0 at one motion oroperation after the pan-section has been cut into form with fullcorners. To so clip and notch the cornersthe section 9 is placed uponbed I), beneath bar 0, as before stated, with its convex line" restingagainst the vertical stops 8 s, which rise from their slotted plates it,that are securedbybolts u u upon die-blocksvo, as shown. Atthe same timethe ends of said section Qbear against the I to clip the corner 0 at thedesired angle relavertieal ends of gages w w,which are bolted to an arm,0:, of die-blocks v, as shown in Fig. 3. A gage and keeper orlock-down,3 slotted and adjustable upona projecting arm, z, is shown at the lefthand in Fig. 1 as so arranged as to secure the pan-section 9 near thepoint where corners 0 are clipped, and such gage may be arranged at boththe right and left hand sides of the machine, if necessary. For thepurpose of cutting said notches p, I provide the lower angle-die, 10,(shown in plan in Fig. 2 and in enlarged transverse section in Fig. 5,)said die being secured to bed g by screw-bolt w, inserted in slot 12 insaid bed, and also securing gage-plate v, as before described. Anauxiliary bolt may also be employed for securing said die-block inplace, as shown in Figs. 1, 2, in order that said gage may be adjustedwithout release or displacement of the dieblock.

A coacting-die, 11, (shown in vertical section in Fig. 5 and inhorizontal section in Fig. 2,) is attached to the lever iby a screw-boltpassing through slot 13 in said lever, as shown in Fig. 3.

For the purpose of cutting the angles 0 upon said sections 9, I employ adie, 14, which is pivotally secured to bed 9 by a bolt passing throughslot 12 therein, as shown, and a coaeting upper cutter, 15, is securedto lever i by bolt 16, as shown in Figs. 1, 3, and 4.

By means of beds gbeing secured to bar a by bolts inserted in slot 2therein, while levers i, which are always parallel with beds g, aresecured to bar It by bolts inserted in slots 4, the cutters 10, and 11,and 14, and 15, respectively secured to said beds and levers, can beadjusted to conform to-any degree of obliquity of the ends of section 9,as said bedsg maybe arranged parallel with each other or at suchdivergence, as may be necessary; and by means of the slots in beds g,wherein the holding-bolts of the cutting-dies are secured, the said diesin each bed may be arranged at such distance apart as the width ofsection 9 may render necessary. The dies 14 15 being each pivoted upontheir respective securing-bolt, they may be adjusted tively to the endand concavelines of section 9. The notches p in said section are cut ofsuch depth relatively to the end line as the seaming together of thesections may render necessary, and the depth of such cut relatively tothe convex line is such as will be necessary to cover thestrengthening-wire which is rolled in at the edge of the vessel in whichthe sections are incorporated, and the amount cut away at 0 is such asmay be necessary for forming the seam by which the sections areconnected with the bottom of the pan.

I claim as my invention- 1. The combination of the slotted transversebed a and the slotted side beds, thereto adj ustably secured, the leverst i and means for vertically vibrating the same, and the dies 10, 11,14, and 15, respectively secured to said beds and levers, as shown anddescribed, and formed and adapted to clip and notch the respectivecorners of the sections 9, as specified.

2. In a metaleuttin g machine, the combination of the back gages orstops, 5 s, the end gages or stops, w w, the notching-dies 10 11, andthe clipping-dies 14 15, all substantially as specified.

3. In ametal-cutting machine, the combination of side bars, g g, and theleversi i, pivotally mounted thereon and arranged to vibrate in a fixedplane relatively to the bars to which they are respectively pivoted, thesaid bars being laterally adjustable both in their distance from andobliquity to each other, the

cutting-dies 10 and 11, respectively secured to said bars and levers andadjustable thereon in their distance from dies 14 15, and arranged andsecured'in fixed planes both in relation'to each other and to the bed orbar to which they are respectively secured, and the said dies 14 15,respectively secured in said bars and levers and arranged to bepivotally adjusted, so as to clip sections 9 at 0 to the required angle,substantially as specified.

ELIJ AH M. \VILBOR. lVitnesses:

T. WV. PORTER, EBEN HUroHnvsoN.

